Policy Certainty Now Outweighs Cost in APAC Battery Storage Investment Decisions

Policy certainty and regulatory mechanisms have decisively overtaken cost considerations as the primary factor driving APAC battery storage investment decisions, according to Colin Koon Peng Ho, head of energy generation and trading at Banpu NEXT. In an exclusive interview ahead of the Energy Storage Summit Asia in Bangkok, Ho explained that while battery technology costs continue their downward trajectory, the inherently dynamic revenue model of BESS—spanning both physical dispatch and financial contracts—means predictable regulatory frameworks now determine where capital flows.

Japan Sets the Gold Standard: 20-Year Fixed Revenue Contracts

Japan has emerged as the region's most compelling case study. In May, the Organization for Cross-regional Coordination of Transmission Operators (OCCTO) selected 19 battery storage projects totaling 1,251MW in its third Long-Term Decarbonisation Power Sources Auction (LTDA). Unlike previous rounds, eligibility required a minimum 6-hour duration—a clear signal that Japan's grid operators are intentionally steering the market toward longer-duration storage capable of providing substantial grid-stabilization services. The 20-year fixed-revenue contracts awarded through LTDA provide exactly the kind of investment certainty that Ho identifies as essential for attracting institutional capital to APAC battery storage investment.

Southeast Asia's Grid Connection Barrier

While Japan demonstrates what is possible with clear policy signals, Southeast Asia faces a steeper climb. Most electricity markets in the region remain dominated by single-buyer models and state-controlled utilities, creating fundamental uncertainty around grid connection pathways for front-of-meter, behind-the-meter, and co-located BESS assets. "Clarity around grid connection regulation considerations would be the key factor impacting how we develop suitable revenue models for our projects," Ho noted. For developers navigating these complex regulatory environments, explore our collection of energy storage solutions designed for diverse grid integration scenarios.

The 2028-2030 Investment Sweet Spot

Banpu NEXT identifies utility-scale grid-connected battery storage and selective solar-plus-storage co-located models as the most attractive investment opportunities between 2028 and 2030. This outlook is driven by rapidly rising renewable energy penetration rates across the region and the urgent need for grid capacity upgrades. Ho anticipates that Southeast Asian markets will accelerate as governments open grid access and establish suitable revenue models—a process that he expects to gain meaningful traction within the 2028-2030 window.

Supply Chain Localization: A Growing Trend

While Banpu NEXT currently relies on established global manufacturers for core BESS components, Ho expects procurement patterns to shift significantly as regional manufacturing capacity scales. "I would expect in the near future, as local BESS manufacturing capacity ramps up and all-in cost competitiveness gains traction, that we would see more local procurement as a percentage of total project costs," he predicted. This aligns with broader industrial policy trends across APAC, where governments are increasingly linking renewable energy and storage tenders to domestic content requirements. For procurement teams building resilient supply chains, visit our store to discover AGAIC POWER's globally sourced storage solutions with local support capabilities.

The Policy-Cost Equation Has Flipped

Ho's insights reflect a maturing industry where the conversation has shifted from "how cheap can batteries get?" to "how predictable are the revenue streams?" Mature markets with established liberalized frameworks continue to attract the bulk of capital, but the gap between leaders and laggards is widening precisely because policy choices—not technology costs—now determine investment outcomes. The Energy Storage Summit Asia in Bangkok (July 1-3) will bring these conversations to center stage, as developers, regulators, and investors converge to chart the region's storage future.